Santa is only a distraction from Jesus, during the Christmas season. Teach on Jesus instead. Giving is fine, as Jesus was given gifts after He was born.
Matthew 6:31-33 (KJV)
31 Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed?
32 (For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things.
33 But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.
Psalm 119:1-3 (KJV)
1 Blessed are the undefiled in the way, who walk in the law of the Lord.
2 Blessed are they that keep his testimonies, and that seek him with the whole heart.
3 They also do no iniquity: they walk in his ways.
A life full of the Spirit is God's will for us all. However, few live a life like this because they do not seek Him.
Living for Christ is a way of living. It isn't just a one day a week thing. Every day, we give it all to God.